Organic Agriculture What is it and How is it Practiced? - PowerPoint PPT Presentation

Organic Federation of Australia. Organic Agriculture What is it and How is it Practiced?. Andre Leu IFOAM, Vice President Organic Federation of Australia, Chairman. IFOAM is the international umbrella organization of organic agriculture movements worldwide. Mission

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‘The evidence presented in this study supports the argument that organic agriculture can be more conducive to food security in Africa than most conventional production systems, and that it is more likely to be sustainable in the long term.’

Supachai Panitchpakdi, Secretary general of UNCTAD and Achim Steiner, Executive Director of UNEP

The ARS organically managed pecans out-yielded the conventionally managed, chemically fertilized Gebert orchard in each of the past five years. Yields on ARS' organic test site surpassed the Gebert commercial orchard by 18 pounds of pecan nuts per tree in 2005 and by 12 pounds per tree in 2007. (Bradford J.M .2008)

The Wisconsin Integrated Cropping Systems Trials

found that organic yields were higher in drought years and the same as conventional in normal weather years. (Posner et al. 2008)

The results of a study that compared erosion in organic and conventional farming over 38 years.

‘This study indicates that, in the long term, the organic farming system was more effective than the conventional farming system in reducing soil erosion and, therefore, in maintaining soil productivity’ (Reganold et al. 1987).

Scientists from the University of Illinois analysed the results of a 50 year agricultural trial and found that synthetic nitrogen fertiliser resulted in all the carbon residues from the crop disappearing as well as an average loss of around 10,000 kg of soil carbon per hectare.

This is around 33,000 kg of carbon dioxide per hectare on top of the many thousands of kilograms of crop residue that is converted into CO2 every year.

Full sun systems. Phase of establishment with plantains as temporary shade.

Agroforestry system with shade leguminous trees,

Successionalagroforestry system with the same shade trees of the agroforestry treatment and in addition natural regeneration and crops

Taking into account natural plant species succession, the high turn over of carbon typical for the conditions of humid tropics, self regulation processes with high biodiversity, to use all storeys and provide as much as possible ecosystem services beside the cocoa production.